Maintenance Ruby 3.4 gets fixes, but no new features. Switch to Ruby 4.0 →
instance method
IPAddr#<<
(::Integer num) -> ::IPAddr
<<(num)
lib/ipaddr.rb
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# File tmp/rubies/ruby-3.4.1/lib/ipaddr.rb, line 145
def <<(num)
return self.clone.set(addr_mask(@addr << num))
end
Returns a new ipaddr built by bitwise left shift.